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TC57256D-25 데이터시트 PDF




Toshiba에서 제조한 전자 부품 TC57256D-25은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


PDF 형식의 TC57256D-25 자료 제공

부품번호 TC57256D-25 기능
기능 CMOS UV ERASABLE AND ELECTRICALLY PROGRAMMABEL READ ONLY MEMORY
제조업체 Toshiba
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TC57256D-25 데이터시트, 핀배열, 회로
TOSHIBA MOS MEMORY PRODUCT
32,768 WORD X 8 BIT CMOS UV ERASABLE AND
ELECTRICALLY PROGRAMMABEL READ ONLY
MEMORY
TC57256D-20
TC57256D-25
SILICON STACKED GATE MOS
DESCRIPTION
The TC57256D is a 32,768 word X8 bit CMOS
ultraviolet light erasable and electrically program-
mable read only memory. For read operation, the
TC57256D's access time is 200ns, and the TC57256D
operates from a single 5-volt power supply and has
low power standby mode which reduces the power
dissipation without increasing access time. The stand-
by mode is achieved by applying a TTL-high level
signal to the CE input. Advanced CMOS technology
reduces the maximum active current to 30 mA/5MHz
and standby current to 100pA.
For program operation, the programming is achiev-
ed by using the high speed programming mode.
Program supply voltage is 21 V. The programming of
the TC57256D is accomplished within one and a half
minutes (typ.) TC57256D is fabricated using CMOS
technology and N-channel silicon double layer gate
MOS technology.
FEATURES
• Peripheral circuit: CMOS
Memory cell
N-MOS
• Low power dissipation
30mA/5MHZ (active)
100llA
(standby)
• Fast access time TC572560-20 200 ns
TC572560-25 250 ns
PIN CONNECTION (TOP VIEW)
• Single 5V power supply
• Full static operation
• High speed programming mode
• Inputs and outputs TTL compatible
• Pin compatible with ROMS TC53257P, TMM23256P
- 'and EPROM i27256
• Standard 28 pin DIP cerdip Package
BLOCK DIAGRAM
PIN NAMES
Ao ,...,A14
0 0 "", 0 7
CE
OE
Vpp
Vee
GND
Address Inputs
Outputs (Inputs)
Chip Enable Input
Output Enable Input
P~ograrn Supply
Voltage
Vee Supply Voltage
(+5V)
Ground
MODE SELECTION
~MODE
CE OE vpp vee
0 0 ,...,07
POWER
(20) (22) (1) (28) (11,..., 13,15,..., 19)
Read
Output Deselect
L
*
L 5V Data Out
• Active
H 5V 5V High Impedance
Standby
H*
5V High Impedance Standby
Program
LH
Data In
Program Inhibit H
*
21V
6V High Impedance
Active
Program Verify
* * , H or L
L
L
Data Out
0-65 -




TC57256D-25 pdf, 반도체, 판매, 대치품
TC57256D-20
TC57256D-25
A.C. TEST CONDITIONS
Output Load
Input Pulse Rise and Fall Times
Input Pulse Levels
Timing Measurement Reference Level
1 TTL Gate and CL (100pF)
10 ns Max.
0.45'" 2.4V
Input 0.8V and 2.0V, Output 0.8V and 2.0V
Note 1: The length of the overprogram pulle may vllry III function of the counter value X.
TIMING WAVEFORMS (PROGRAM)
(Vee = 6V ±O.25V, Vpp = 21V ± O.5V)
vpp
tvs
PROGRAM
PROGRAM
VERIFY
INITIAL PROGRAM
PROGRAM
OVER PROGRAM
Note: (1) Vee must be applied simultaneously with or before Vpp and cut off simultaneously with or after Vpp.
(2) Removing the device from socket and setting the device in socket with Vpp=21 V may cause permanent
damage to the device.
(3) The Vpp supply voltage is permitted up to 22V for program operation; voltages over 22V should not be
applied to the Vpp terminal. When the switching pulse voltage is applied to the Vpp terminal, the overshoot
voltage of its pulse should not exceed 22V.
- 0-68 -

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TC57256D-25 전자부품, 판매, 대치품
HIGH SPEED PROGRAM MODE FLOW CHART
TC57256D-20
TC57256D-25
ADDRESS ..
NEXT ADDRESS
OVERPROGRAM X PULSES OF 1msec
OR ONE PULSE OF Xmsec DURATION
- 0-71 -

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관련 데이터시트

부품번호상세설명 및 기능제조사
TC57256D-20

CMOS UV ERASABLE AND ELECTRICALLY PROGRAMMABEL READ ONLY MEMORY

Toshiba
Toshiba
TC57256D-25

CMOS UV ERASABLE AND ELECTRICALLY PROGRAMMABEL READ ONLY MEMORY

Toshiba
Toshiba

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